以L-脯氨酸为原料合成了离子液体功能化脯氨酸前驱体(IL-Pro),并将其固载到SBA-15介孔分子筛上,制得IL-Pro/SBA-15催化剂.用红外光谱、热重、N2吸附-脱附、X射线衍射和透射电镜等手段表征了IL-Pro/SBA-15催化剂,并考察了该催化剂在Knoevenagel缩合反应中的催化性能.结果表明,固载离子液体功能化脯氨酸没有破坏SBA-15的有序介孔结构,但孔体积、孔径和比面表积有所下降;IL-Pro/SBA-15的失重峰在250～360℃(峰值为310℃).在以苯甲醛和丙二腈为底物的Knoevenagel反应中,IL-Pro/SBA-15催化剂表现出较高的活性,缩合产物收率高达94%;经简单分离后催化剂可重复使用7次以上而活性基本保持不变.
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